Patients with sick sinus syndrome except in the presence of a functioning ventricular pacemaker; 2nd- or 3rd-degree AV block except in the presence of a functioning ventricular pacemaker; hypotension (<90 mm Hg systolic); hypersensitivity to Angiozem; and acute myocardial infarction and pulmonary congestion documented by x-ray on admission.
Use in lactation: Diltiazem should not be given to nursing women until more information becomes available concerning its safety on infants.